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--- |
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language: en |
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tags: |
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- text-classification |
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- pytorch |
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- roberta |
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- emotions |
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- multi-class-classification |
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- multi-label-classification |
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datasets: |
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- go_emotions |
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license: mit |
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widget: |
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- text: "I am not having a great day." |
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--- |
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Model trained from [roberta-base](https://huggingface.co/roberta-base) on the [go_emotions](https://huggingface.co/datasets/go_emotions) dataset for multi-label classification. |
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[go_emotions](https://huggingface.co/datasets/go_emotions) is based on Reddit data and has 28 labels. It is a multi-label dataset where one or multiple labels may apply for any given input text, hence this model is a multi-label classification model with 28 'probability' float outputs for any given input text. Typically a threshold of 0.5 is applied to the probabilities for the prediction for each label. |
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The model was trained using `AutoModelForSequenceClassification.from_pretrained` with `problem_type="multi_label_classification"` for 3 epochs with a learning rate of 2e-5 and weight decay of 0.01. |
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Evaluation (of the 28 dim output via a threshold of 0.5 to binarize each) using the dataset test split gives: |
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- Micro F1 0.585 |
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- ROC AUC 0.751 |
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- Accuracy 0.474 |
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But the metrics would be more meaningful when measured per label given the multi-label nature. |
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Additionally some labels (E.g. `gratitude`) when considered independently perform very strongly with F1 around 0.9, whilst others (E.g. `relief`) perform very poorly. This is a challenging dataset. Labels such as `relief` do have much fewer examples in the training data (less than 100 out of the 40k+), but there is also some ambiguity and/or labelling errors visible in the training data of `go_emotions` that is suspected to constrain the performance. |
